Skip navigation
SuUB logo
DSpace logo

  • Home
  • Institutions
    • University of Bremen
    • City University of Applied Sciences
    • Bremerhaven University of Applied Sciences
  • Sign on to:
    • My Media
    • Receive email
      updates
    • Edit Account details

Citation link: http://nbn-resolving.de/urn:nbn:de:gbv:46-00103066-17
00103066-1.pdf
OpenAccess
 
copyright

Sea ice and the air-sea exchange of CO2


File Description SizeFormat
00103066-1.pdf47.23 MBAdobe PDFView/Open
Other Titles: Meereis und der Austausch von CO2 zwischen Ozean und Atmosphäre
Authors: Fischer, Michael 
Supervisor: Dieckmann, Gerhard
1. Expert: Wolf-Gladrow, Dieter
2. Expert: Eicken, Hajo 
Abstract: 
The objective of this thesis was to improve the state of knowledge concerning the inorganic carbon dynamics, including the precipitation of CaCO3 in sea ice and its significance for the polar carbon cycle as well as to obtain improved estimates of the diurnal and long-term CO2 flux on small scales during the winter-spring-summer transition. To study the exchange of CO2 between sea ice and the atmosphere as well as the biogeochemical parameters and the spatial and temporal distribution of ikaite in sea ice during different seasons, three field studies were conducted in the Arctic and Antarctic. High pCO2 values in sea ice of up to 3900 μatm were observed. The resulting fluxes ranged between -3.41 and 9.5 mmol m-2 d-1. Ikaite was found mostly in the uppermost layers of sea ice. Based on the observations the efflux from Arctic sea ice to the atmosphere can be expected to result in a flux of several Tg C a-1. The findings in this thesis support the concept of the sea ice driven carbon pump.
Keywords: sea ice, Arctic, Antarctic, CO2, flux, ikaite, biogeochemistry, carbonate chemistry, polar oceans, chamber technique
Issue Date: 12-Feb-2013
Type: Dissertation
URN: urn:nbn:de:gbv:46-00103066-17
Institution: Universität Bremen 
Faculty: FB2 Biologie/Chemie 
Appears in Collections:Dissertationen

  

Page view(s)

36
checked on Jan 25, 2021

Download(s)

1
checked on Jan 25, 2021

Google ScholarTM

Check


Items in Media are protected by copyright, with all rights reserved, unless otherwise indicated.

Legal notice -Feedback -Data privacy
Media - Extension maintained and optimized by Logo 4SCIENCE